diff options
author | Nicolas George <nicolas.george@normalesup.org> | 2012-07-19 03:03:20 +0400 |
---|---|---|
committer | Nicolas George <nicolas.george@normalesup.org> | 2012-07-23 19:14:59 +0400 |
commit | a7ac05ce2f9fd94dad2326eef8110c47cdb8af57 (patch) | |
tree | 955ae19982c6f6903644ecdbbe75645e96f5e2a4 /libavfilter/src_movie.c | |
parent | 05776119c1b4da3a699ec1b3d5439687afed24af (diff) |
src_movie: implement multiple outputs.
The audio and video code paths were too different,
most of the decoding has been rewritten.
Diffstat (limited to 'libavfilter/src_movie.c')
-rw-r--r-- | libavfilter/src_movie.c | 692 |
1 files changed, 392 insertions, 300 deletions
diff --git a/libavfilter/src_movie.c b/libavfilter/src_movie.c index cb65dd6877..d49287bb2b 100644 --- a/libavfilter/src_movie.c +++ b/libavfilter/src_movie.c @@ -25,15 +25,16 @@ * * @todo use direct rendering (no allocation of a new frame) * @todo support a PTS correction mechanism - * @todo support more than one output stream */ /* #define DEBUG */ #include <float.h> #include "libavutil/avstring.h" +#include "libavutil/avassert.h" #include "libavutil/opt.h" #include "libavutil/imgutils.h" +#include "libavutil/timestamp.h" #include "libavformat/avformat.h" #include "audio.h" #include "avcodec.h" @@ -42,11 +43,10 @@ #include "internal.h" #include "video.h" -typedef enum { - STATE_DECODING, - STATE_FLUSHING, - STATE_DONE, -} MovieState; +typedef struct { + AVStream *st; + int done; +} MovieStream; typedef struct { /* common A/V fields */ @@ -55,22 +55,18 @@ typedef struct { double seek_point_d; char *format_name; char *file_name; - int stream_index; + char *stream_specs; /**< user-provided list of streams, separated by + */ + int stream_index; /**< for compatibility */ int loop_count; AVFormatContext *format_ctx; - AVCodecContext *codec_ctx; - MovieState state; + int eof; + AVPacket pkt, pkt0; AVFrame *frame; ///< video frame to store the decoded images in - /* video-only fields */ - int w, h; - AVFilterBufferRef *picref; - - /* audio-only fields */ - int bps; ///< bytes per sample - AVPacket pkt, pkt0; - AVFilterBufferRef *samplesref; + int max_stream_index; /**< max stream # actually used for output */ + MovieStream *st; /**< array of all streams, one per output */ + int *out_index; /**< stream number -> output number map, or -1 */ } MovieContext; #define OFFSET(x) offsetof(MovieContext, x) @@ -78,8 +74,10 @@ typedef struct { static const AVOption movie_options[]= { {"format_name", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MIN, CHAR_MAX }, {"f", "set format name", OFFSET(format_name), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MIN, CHAR_MAX }, -{"stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, {.dbl = -1}, -1, INT_MAX }, +{"streams", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MAX, CHAR_MAX }, +{"s", "set streams", OFFSET(stream_specs), AV_OPT_TYPE_STRING, {.str = 0}, CHAR_MAX, CHAR_MAX }, {"si", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, {.dbl = -1}, -1, INT_MAX }, +{"stream_index", "set stream index", OFFSET(stream_index), AV_OPT_TYPE_INT, {.dbl = -1}, -1, INT_MAX }, {"seek_point", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, {.dbl = 0}, 0, (INT64_MAX-1) / 1000000 }, {"sp", "set seekpoint (seconds)", OFFSET(seek_point_d), AV_OPT_TYPE_DOUBLE, {.dbl = 0}, 0, (INT64_MAX-1) / 1000000 }, {"loop", "set loop count", OFFSET(loop_count), AV_OPT_TYPE_INT, {.dbl = 1}, 0, INT_MAX }, @@ -88,14 +86,91 @@ static const AVOption movie_options[]= { AVFILTER_DEFINE_CLASS(movie); -static av_cold int movie_common_init(AVFilterContext *ctx, const char *args, - enum AVMediaType type) +static int movie_config_output_props(AVFilterLink *outlink); +static int movie_request_frame(AVFilterLink *outlink); + +static AVStream *find_stream(void *log, AVFormatContext *avf, const char *spec) +{ + int i, ret, already = 0, stream_id = -1; + char type_char, dummy; + AVStream *found = NULL; + enum AVMediaType type; + + ret = sscanf(spec, "d%[av]%d%c", &type_char, &stream_id, &dummy); + if (ret >= 1 && ret <= 2) { + type = type_char == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO; + ret = av_find_best_stream(avf, type, stream_id, -1, NULL, 0); + if (ret < 0) { + av_log(log, AV_LOG_ERROR, "No %s stream with index '%d' found\n", + av_get_media_type_string(type), stream_id); + return NULL; + } + return avf->streams[ret]; + } + for (i = 0; i < avf->nb_streams; i++) { + ret = avformat_match_stream_specifier(avf, avf->streams[i], spec); + if (ret < 0) { + av_log(log, AV_LOG_ERROR, + "Invalid stream specifier \"%s\"\n", spec); + return NULL; + } + if (!ret) + continue; + if (avf->streams[i]->discard != AVDISCARD_ALL) { + already++; + continue; + } + if (found) { + av_log(log, AV_LOG_WARNING, + "Ambiguous stream specifier \"%s\", using #%d\n", spec, i); + break; + } + found = avf->streams[i]; + } + if (!found) { + av_log(log, AV_LOG_WARNING, "Stream specifier \"%s\" %s\n", spec, + already ? "matched only already used streams" : + "did not match any stream"); + return NULL; + } + if (found->codec->codec_type != AVMEDIA_TYPE_VIDEO && + found->codec->codec_type != AVMEDIA_TYPE_AUDIO) { + av_log(log, AV_LOG_ERROR, "Stream specifier \"%s\" matched a %s stream," + "currently unsupported by libavfilter\n", spec, + av_get_media_type_string(found->codec->codec_type)); + return NULL; + } + return found; +} + +static int open_stream(void *log, MovieStream *st) +{ + AVCodec *codec; + int ret; + + codec = avcodec_find_decoder(st->st->codec->codec_id); + if (!codec) { + av_log(log, AV_LOG_ERROR, "Failed to find any codec\n"); + return AVERROR(EINVAL); + } + + if ((ret = avcodec_open2(st->st->codec, codec, NULL)) < 0) { + av_log(log, AV_LOG_ERROR, "Failed to open codec\n"); + return ret; + } + + return 0; +} + +static av_cold int movie_init(AVFilterContext *ctx, const char *args) { MovieContext *movie = ctx->priv; AVInputFormat *iformat = NULL; - AVCodec *codec; int64_t timestamp; - int ret; + int nb_streams, ret, i; + char default_streams[16], *stream_specs, *spec, *cursor; + char name[16]; + AVStream *st; movie->class = &movie_class; av_opt_set_defaults(movie); @@ -114,6 +189,23 @@ static av_cold int movie_common_init(AVFilterContext *ctx, const char *args, movie->seek_point = movie->seek_point_d * 1000000 + 0.5; + stream_specs = movie->stream_specs; + if (!stream_specs) { + snprintf(default_streams, sizeof(default_streams), "d%c%d", + !strcmp(ctx->filter->name, "amovie") ? 'a' : 'v', + movie->stream_index); + stream_specs = default_streams; + } + for (cursor = stream_specs, nb_streams = 1; *cursor; cursor++) + if (*cursor == '+') + nb_streams++; + + if (movie->loop_count != 1 && nb_streams != 1) { + av_log(ctx, AV_LOG_ERROR, + "Loop with several streams is currently unsupported\n"); + return AVERROR_PATCHWELCOME; + } + av_register_all(); // Try to find the movie format (container) @@ -148,358 +240,358 @@ static av_cold int movie_common_init(AVFilterContext *ctx, const char *args, } } - /* select the media stream */ - if ((ret = av_find_best_stream(movie->format_ctx, type, - movie->stream_index, -1, NULL, 0)) < 0) { - av_log(ctx, AV_LOG_ERROR, "No %s stream with index '%d' found\n", - av_get_media_type_string(type), movie->stream_index); - return ret; + for (i = 0; i < movie->format_ctx->nb_streams; i++) + movie->format_ctx->streams[i]->discard = AVDISCARD_ALL; + + movie->st = av_calloc(nb_streams, sizeof(*movie->st)); + if (!movie->st) + return AVERROR(ENOMEM); + + for (i = 0; i < nb_streams; i++) { + spec = av_strtok(stream_specs, "+", &cursor); + if (!spec) + return AVERROR_BUG; + stream_specs = NULL; /* for next strtok */ + st = find_stream(ctx, movie->format_ctx, spec); + if (!st) + return AVERROR(EINVAL); + st->discard = AVDISCARD_DEFAULT; + movie->st[i].st = st; + movie->max_stream_index = FFMAX(movie->max_stream_index, st->index); } - movie->stream_index = ret; - movie->codec_ctx = movie->format_ctx->streams[movie->stream_index]->codec; - - /* - * So now we've got a pointer to the so-called codec context for our video - * stream, but we still have to find the actual codec and open it. - */ - codec = avcodec_find_decoder(movie->codec_ctx->codec_id); - if (!codec) { - av_log(ctx, AV_LOG_ERROR, "Failed to find any codec\n"); - return AVERROR(EINVAL); + if (av_strtok(NULL, "+", &cursor)) + return AVERROR_BUG; + + movie->out_index = av_calloc(movie->max_stream_index + 1, + sizeof(*movie->out_index)); + if (!movie->out_index) + return AVERROR(ENOMEM); + for (i = 0; i <= movie->max_stream_index; i++) + movie->out_index[i] = -1; + for (i = 0; i < nb_streams; i++) + movie->out_index[movie->st[i].st->index] = i; + + for (i = 0; i < nb_streams; i++) { + AVFilterPad pad = { 0 }; + snprintf(name, sizeof(name), "out%d", i); + pad.type = movie->st[i].st->codec->codec_type; + pad.name = av_strdup(name); + pad.config_props = movie_config_output_props; + pad.request_frame = movie_request_frame; + ff_insert_outpad(ctx, i, &pad); + ret = open_stream(ctx, &movie->st[i]); + if (ret < 0) + return ret; } - if ((ret = avcodec_open2(movie->codec_ctx, codec, NULL)) < 0) { - av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n"); - return ret; + if (!(movie->frame = avcodec_alloc_frame()) ) { + av_log(log, AV_LOG_ERROR, "Failed to alloc frame\n"); + return AVERROR(ENOMEM); } av_log(ctx, AV_LOG_VERBOSE, "seek_point:%"PRIi64" format_name:%s file_name:%s stream_index:%d\n", movie->seek_point, movie->format_name, movie->file_name, movie->stream_index); - if (!(movie->frame = avcodec_alloc_frame()) ) { - av_log(ctx, AV_LOG_ERROR, "Failed to alloc frame\n"); - return AVERROR(ENOMEM); - } - return 0; } -static av_cold void movie_common_uninit(AVFilterContext *ctx) +static av_cold void movie_uninit(AVFilterContext *ctx) { MovieContext *movie = ctx->priv; + int i; - av_free(movie->file_name); - av_free(movie->format_name); - if (movie->codec_ctx) - avcodec_close(movie->codec_ctx); + for (i = 0; i < ctx->nb_outputs; i++) { + av_freep(&ctx->output_pads[i].name); + if (movie->st[i].st) + avcodec_close(movie->st[i].st->codec); + } + av_opt_free(movie); + av_freep(&movie->file_name); + av_freep(&movie->st); + av_freep(&movie->out_index); + av_freep(&movie->frame); if (movie->format_ctx) avformat_close_input(&movie->format_ctx); - - avfilter_unref_buffer(movie->picref); - av_freep(&movie->frame); - - avfilter_unref_buffer(movie->samplesref); } -#if CONFIG_MOVIE_FILTER - -static av_cold int movie_init(AVFilterContext *ctx, const char *args) +static int movie_query_formats(AVFilterContext *ctx) { MovieContext *movie = ctx->priv; - int ret; + int list[] = { 0, -1 }; + int64_t list64[] = { 0, -1 }; + int i; + + for (i = 0; i < ctx->nb_outputs; i++) { + MovieStream *st = &movie->st[i]; + AVCodecContext *c = st->st->codec; + AVFilterLink *outlink = ctx->outputs[i]; + + switch (c->codec_type) { + case AVMEDIA_TYPE_VIDEO: + list[0] = c->pix_fmt; + ff_formats_ref(ff_make_format_list(list), &outlink->in_formats); + break; + case AVMEDIA_TYPE_AUDIO: + list[0] = c->sample_fmt; + ff_formats_ref(ff_make_format_list(list), &outlink->in_formats); + list[0] = c->sample_rate; + ff_formats_ref(ff_make_format_list(list), &outlink->in_samplerates); + list64[0] = c->channel_layout ? c->channel_layout : + av_get_default_channel_layout(c->channels); + ff_channel_layouts_ref(avfilter_make_format64_list(list64), + &outlink->in_channel_layouts); + break; + } + } - if ((ret = movie_common_init(ctx, args, AVMEDIA_TYPE_VIDEO)) < 0) - return ret; + return 0; +} - movie->w = movie->codec_ctx->width; - movie->h = movie->codec_ctx->height; +static int movie_config_output_props(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + MovieContext *movie = ctx->priv; + unsigned out_id = FF_OUTLINK_IDX(outlink); + MovieStream *st = &movie->st[out_id]; + AVCodecContext *c = st->st->codec; + + outlink->time_base = st->st->time_base; + + switch (c->codec_type) { + case AVMEDIA_TYPE_VIDEO: + outlink->w = c->width; + outlink->h = c->height; + outlink->frame_rate = st->st->r_frame_rate; + break; + case AVMEDIA_TYPE_AUDIO: + break; + } return 0; } -static int movie_query_formats(AVFilterContext *ctx) +static AVFilterBufferRef *frame_to_buf(enum AVMediaType type, AVFrame *frame, + AVFilterLink *outlink) { - MovieContext *movie = ctx->priv; - enum PixelFormat pix_fmts[] = { movie->codec_ctx->pix_fmt, PIX_FMT_NONE }; + AVFilterBufferRef *buf, *copy; + + buf = avfilter_get_buffer_ref_from_frame(type, frame, + AV_PERM_WRITE | + AV_PERM_PRESERVE | + AV_PERM_REUSE2); + if (!buf) + return NULL; + buf->pts = av_frame_get_best_effort_timestamp(frame); + copy = ff_copy_buffer_ref(outlink, buf); + if (!copy) + return NULL; + buf->buf->data[0] = NULL; /* it belongs to the frame */ + avfilter_unref_buffer(buf); + return copy; +} - ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); - return 0; +static char *describe_bufref_to_str(char *dst, size_t dst_size, + AVFilterBufferRef *buf, + AVFilterLink *link) +{ + switch (buf->type) { + case AVMEDIA_TYPE_VIDEO: + snprintf(dst, dst_size, + "video pts:%s time:%s pos:%"PRId64" size:%dx%d aspect:%d/%d", + av_ts2str(buf->pts), av_ts2timestr(buf->pts, &link->time_base), + buf->pos, buf->video->w, buf->video->h, + buf->video->sample_aspect_ratio.num, + buf->video->sample_aspect_ratio.den); + break; + case AVMEDIA_TYPE_AUDIO: + snprintf(dst, dst_size, + "audio pts:%s time:%s pos:%"PRId64" samples:%d", + av_ts2str(buf->pts), av_ts2timestr(buf->pts, &link->time_base), + buf->pos, buf->audio->nb_samples); + break; + default: + snprintf(dst, dst_size, "%s BUG", av_get_media_type_string(buf->type)); + break; + } + return dst; } -static int movie_config_output_props(AVFilterLink *outlink) +#define describe_bufref(buf, link) \ + describe_bufref_to_str((char[1024]){0}, 1024, buf, link) + +static int rewind_file(AVFilterContext *ctx) { - MovieContext *movie = outlink->src->priv; + MovieContext *movie = ctx->priv; + int64_t timestamp = movie->seek_point; + int ret, i; - outlink->w = movie->w; - outlink->h = movie->h; - outlink->time_base = movie->format_ctx->streams[movie->stream_index]->time_base; + if (movie->format_ctx->start_time != AV_NOPTS_VALUE) + timestamp += movie->format_ctx->start_time; + ret = av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Unable to loop: %s\n", av_err2str(ret)); + movie->loop_count = 1; /* do not try again */ + return ret; + } + for (i = 0; i < ctx->nb_outputs; i++) { + avcodec_flush_buffers(movie->st[i].st->codec); + movie->st[i].done = 0; + } + movie->eof = 0; return 0; } -static int movie_get_frame(AVFilterLink *outlink) +/** + * Try to push a frame to the requested output. + * + * @return 1 if a frame was pushed on the requested output, + * 0 if another attempt is possible, + * <0 AVERROR code + */ +static int movie_push_frame(AVFilterContext *ctx, unsigned out_id) { - MovieContext *movie = outlink->src->priv; - AVPacket pkt; - int ret = 0, frame_decoded; - AVStream *st = movie->format_ctx->streams[movie->stream_index]; - - if (movie->state == STATE_DONE) - return 0; - - while (1) { - if (movie->state == STATE_DECODING) { - ret = av_read_frame(movie->format_ctx, &pkt); - if (ret == AVERROR_EOF) { - int64_t timestamp; + MovieContext *movie = ctx->priv; + AVPacket *pkt = &movie->pkt; + MovieStream *st; + int ret, got_frame = 0, pkt_out_id; + AVFilterLink *outlink; + AVFilterBufferRef *buf; + + if (!pkt->size) { + if (movie->eof) { + if (movie->st[out_id].done) { if (movie->loop_count != 1) { - timestamp = movie->seek_point; - if (movie->format_ctx->start_time != AV_NOPTS_VALUE) - timestamp += movie->format_ctx->start_time; - if (av_seek_frame(movie->format_ctx, -1, timestamp, AVSEEK_FLAG_BACKWARD) < 0) { - movie->state = STATE_FLUSHING; - } else if (movie->loop_count>1) - movie->loop_count--; - continue; - } else { - movie->state = STATE_FLUSHING; + ret = rewind_file(ctx); + if (ret < 0) + return ret; + movie->loop_count -= movie->loop_count > 1; + av_log(ctx, AV_LOG_VERBOSE, "Stream finished, looping.\n"); + return 0; /* retry */ } - } else if (ret < 0) - break; - } - - // Is this a packet from the video stream? - if (pkt.stream_index == movie->stream_index || movie->state == STATE_FLUSHING) { - avcodec_decode_video2(movie->codec_ctx, movie->frame, &frame_decoded, &pkt); - - if (frame_decoded) { - /* FIXME: avoid the memcpy */ - movie->picref = ff_get_video_buffer(outlink, AV_PERM_WRITE | AV_PERM_PRESERVE | - AV_PERM_REUSE2, outlink->w, outlink->h); - av_image_copy(movie->picref->data, movie->picref->linesize, - (void*)movie->frame->data, movie->frame->linesize, - movie->picref->format, outlink->w, outlink->h); - avfilter_copy_frame_props(movie->picref, movie->frame); - - /* FIXME: use a PTS correction mechanism as that in - * ffplay.c when some API will be available for that */ - /* use pkt_dts if pkt_pts is not available */ - movie->picref->pts = movie->frame->pkt_pts == AV_NOPTS_VALUE ? - movie->frame->pkt_dts : movie->frame->pkt_pts; - - if (!movie->frame->sample_aspect_ratio.num) - movie->picref->video->sample_aspect_ratio = st->sample_aspect_ratio; - av_dlog(outlink->src, - "movie_get_frame(): file:'%s' pts:%"PRId64" time:%lf pos:%"PRId64" aspect:%d/%d\n", - movie->file_name, movie->picref->pts, - (double)movie->picref->pts * av_q2d(st->time_base), - movie->picref->pos, - movie->picref->video->sample_aspect_ratio.num, - movie->picref->video->sample_aspect_ratio.den); - // We got it. Free the packet since we are returning - av_free_packet(&pkt); - - return 0; - } else if (movie->state == STATE_FLUSHING) { - movie->state = STATE_DONE; - av_free_packet(&pkt); return AVERROR_EOF; } + /* packet is already ready for flushing */ + } else { + ret = av_read_frame(movie->format_ctx, &movie->pkt0); + if (ret < 0) { + av_init_packet(&movie->pkt0); /* ready for flushing */ + *pkt = movie->pkt0; + if (ret == AVERROR_EOF) { + movie->eof = 1; + return 0; /* start flushing */ + } + return ret; + } + *pkt = movie->pkt0; } - // Free the packet that was allocated by av_read_frame - av_free_packet(&pkt); } - return ret; + pkt_out_id = pkt->stream_index > movie->max_stream_index ? -1 : + movie->out_index[pkt->stream_index]; + if (pkt_out_id < 0) { + av_free_packet(&movie->pkt0); + pkt->size = 0; /* ready for next run */ + pkt->data = NULL; + return 0; + } + st = &movie->st[pkt_out_id]; + outlink = ctx->outputs[pkt_out_id]; + + switch (st->st->codec->codec_type) { + case AVMEDIA_TYPE_VIDEO: + ret = avcodec_decode_video2(st->st->codec, movie->frame, &got_frame, pkt); + break; + case AVMEDIA_TYPE_AUDIO: + ret = avcodec_decode_audio4(st->st->codec, movie->frame, &got_frame, pkt); + break; + default: + ret = AVERROR(ENOSYS); + break; + } + if (ret < 0) { + av_log(ctx, AV_LOG_WARNING, "Decode error: %s\n", av_err2str(ret)); + return 0; + } + if (!ret) + ret = pkt->size; + + pkt->data += ret; + pkt->size -= ret; + if (pkt->size <= 0) { + av_free_packet(&movie->pkt0); + pkt->size = 0; /* ready for next run */ + pkt->data = NULL; + } + if (!got_frame) { + if (!ret) + st->done = 1; + return 0; + } + + buf = frame_to_buf(st->st->codec->codec_type, movie->frame, outlink); + if (!buf) + return AVERROR(ENOMEM); + av_dlog(ctx, "movie_push_frame(): file:'%s' %s\n", movie->file_name, + describe_bufref(buf, outlink)); + switch (st->st->codec->codec_type) { + case AVMEDIA_TYPE_VIDEO: + if (!movie->frame->sample_aspect_ratio.num) + buf->video->sample_aspect_ratio = st->st->sample_aspect_ratio; + ff_start_frame(outlink, buf); + ff_draw_slice(outlink, 0, outlink->h, 1); + ff_end_frame(outlink); + break; + case AVMEDIA_TYPE_AUDIO: + ff_filter_samples(outlink, buf); + break; + } + + return pkt_out_id == out_id; } static int movie_request_frame(AVFilterLink *outlink) { - AVFilterBufferRef *outpicref; - MovieContext *movie = outlink->src->priv; + AVFilterContext *ctx = outlink->src; + unsigned out_id = FF_OUTLINK_IDX(outlink); int ret; - if (movie->state == STATE_DONE) - return AVERROR_EOF; - if ((ret = movie_get_frame(outlink)) < 0) - return ret; - - outpicref = avfilter_ref_buffer(movie->picref, ~0); - if (!outpicref) { - ret = AVERROR(ENOMEM); - goto fail; + while (1) { + ret = movie_push_frame(ctx, out_id); + if (ret) + return FFMIN(ret, 0); } - - ret = ff_start_frame(outlink, outpicref); - if (ret < 0) - goto fail; - - ret = ff_draw_slice(outlink, 0, outlink->h, 1); - if (ret < 0) - goto fail; - - ret = ff_end_frame(outlink); -fail: - avfilter_unref_bufferp(&movie->picref); - - return ret; } +#if CONFIG_MOVIE_FILTER + AVFilter avfilter_vsrc_movie = { .name = "movie", .description = NULL_IF_CONFIG_SMALL("Read from a movie source."), .priv_size = sizeof(MovieContext), .init = movie_init, - .uninit = movie_common_uninit, + .uninit = movie_uninit, .query_formats = movie_query_formats, .inputs = (const AVFilterPad[]) {{ .name = NULL }}, - .outputs = (const AVFilterPad[]) {{ .name = "default", - .type = AVMEDIA_TYPE_VIDEO, - .request_frame = movie_request_frame, - .config_props = movie_config_output_props, }, - { .name = NULL}}, + .outputs = (const AVFilterPad[]) {{ .name = NULL }}, }; #endif /* CONFIG_MOVIE_FILTER */ #if CONFIG_AMOVIE_FILTER -static av_cold int amovie_init(AVFilterContext *ctx, const char *args) -{ - MovieContext *movie = ctx->priv; - int ret; - - if ((ret = movie_common_init(ctx, args, AVMEDIA_TYPE_AUDIO)) < 0) - return ret; - - movie->bps = av_get_bytes_per_sample(movie->codec_ctx->sample_fmt); - return 0; -} - -static int amovie_query_formats(AVFilterContext *ctx) -{ - MovieContext *movie = ctx->priv; - AVCodecContext *c = movie->codec_ctx; - - enum AVSampleFormat sample_fmts[] = { c->sample_fmt, -1 }; - int sample_rates[] = { c->sample_rate, -1 }; - int64_t chlayouts[] = { c->channel_layout ? c->channel_layout : - av_get_default_channel_layout(c->channels), -1 }; - - ff_set_common_formats (ctx, ff_make_format_list(sample_fmts)); - ff_set_common_samplerates (ctx, ff_make_format_list(sample_rates)); - ff_set_common_channel_layouts(ctx, avfilter_make_format64_list(chlayouts)); - - return 0; -} - -static int amovie_config_output_props(AVFilterLink *outlink) -{ - MovieContext *movie = outlink->src->priv; - AVCodecContext *c = movie->codec_ctx; - - outlink->sample_rate = c->sample_rate; - outlink->time_base = movie->format_ctx->streams[movie->stream_index]->time_base; - - return 0; -} - -static int amovie_get_samples(AVFilterLink *outlink) -{ - MovieContext *movie = outlink->src->priv; - AVPacket pkt; - int ret, got_frame = 0; - - if (!movie->pkt.size && movie->state == STATE_DONE) - return AVERROR_EOF; - - /* check for another frame, in case the previous one was completely consumed */ - if (!movie->pkt.size) { - while ((ret = av_read_frame(movie->format_ctx, &pkt)) >= 0) { - // Is this a packet from the selected stream? - if (pkt.stream_index != movie->stream_index) { - av_free_packet(&pkt); - continue; - } else { - movie->pkt0 = movie->pkt = pkt; - break; - } - } - - if (ret == AVERROR_EOF) { - movie->state = STATE_DONE; - return ret; - } - } - - /* decode and update the movie pkt */ - avcodec_get_frame_defaults(movie->frame); - ret = avcodec_decode_audio4(movie->codec_ctx, movie->frame, &got_frame, &movie->pkt); - if (ret < 0) { - movie->pkt.size = 0; - return ret; - } - movie->pkt.data += ret; - movie->pkt.size -= ret; - - /* wrap the decoded data in a samplesref */ - if (got_frame) { - int nb_samples = movie->frame->nb_samples; - int data_size = - av_samples_get_buffer_size(NULL, movie->codec_ctx->channels, - nb_samples, movie->codec_ctx->sample_fmt, 1); - if (data_size < 0) - return data_size; - movie->samplesref = - ff_get_audio_buffer(outlink, AV_PERM_WRITE, nb_samples); - memcpy(movie->samplesref->data[0], movie->frame->data[0], data_size); - movie->samplesref->pts = movie->pkt.pts; - movie->samplesref->pos = movie->pkt.pos; - movie->samplesref->audio->sample_rate = movie->codec_ctx->sample_rate; - } - - // We got it. Free the packet since we are returning - if (movie->pkt.size <= 0) - av_free_packet(&movie->pkt0); - - return 0; -} - -static int amovie_request_frame(AVFilterLink *outlink) -{ - MovieContext *movie = outlink->src->priv; - int ret; - - if (movie->state == STATE_DONE) - return AVERROR_EOF; - do { - if ((ret = amovie_get_samples(outlink)) < 0) - return ret; - } while (!movie->samplesref); - - ff_filter_samples(outlink, avfilter_ref_buffer(movie->samplesref, ~0)); - avfilter_unref_buffer(movie->samplesref); - movie->samplesref = NULL; - - return 0; -} - AVFilter avfilter_asrc_amovie = { .name = "amovie", .description = NULL_IF_CONFIG_SMALL("Read audio from a movie source."), .priv_size = sizeof(MovieContext), - .init = amovie_init, - .uninit = movie_common_uninit, - .query_formats = amovie_query_formats, + .init = movie_init, + .uninit = movie_uninit, + .query_formats = movie_query_formats, .inputs = (const AVFilterPad[]) {{ .name = NULL }}, - .outputs = (const AVFilterPad[]) {{ .name = "default", - .type = AVMEDIA_TYPE_AUDIO, - .request_frame = amovie_request_frame, - .config_props = amovie_config_output_props, }, - { .name = NULL}}, + .outputs = (const AVFilterPad[]) {{ .name = NULL }}, }; #endif /* CONFIG_AMOVIE_FILTER */ |